Iphone 5c 3G or 4G? What does it use?

What does the iphone 5c use? Either 3G or 4G?

It is 4G ready. Meaning that its on the fastest mode that you can have.

It will automatically run on the fastest whether it's 4g, LTE or Wi-Fi

Depends on the area. If you have 4G available then that, otherwise 3G. If at all it can access Wi-Fi then it would use that.

4G when it is available. 3G when it is not.